The brains of introverts and extroverts differ in the way they respond to experiences, according to a new study. The research revealed that extroverts like instant gratification while introverts tend to be distressed by excessive stimulation.
Yu Fu and Richard Depue at Cornell University, in New York, U.S., studied a group of students to find a mixture of introverts and extroverts. They then gave the volunteers Ritalin, a drug used to treat ADHD, which encourages the brain to produce the feel-good chemical dopamine.
The volunteers were then asked to watch a video while the researchers studied how the footage was linked to dopamine release in their brains. They did this by studying the behaviour of the participants, including their demeanour and how quickly they could tap their fingers…
This revealed that extroverts experience rushes of dopamine as a result of their environment while introverts do not. As a result, the researchers concluded that introverts have fundamental differences in the way their brains work.